MATISSE L-, M-, and N-band visibility accuracies that allow us to distinguish between the disc models with different radial density slopes α, disc flarings β, scale heightsh₀, and surface density profiles Δ(β − α). The given values mark the required visibility accuracies, whereby bands with no constraint for the visibility measurement are marked with a dash. The colours indicate the feasibility of observations by giving the required-accuracy-to-PAE-accuracy ratio (see Sect. 4.3.2 for details).